Re: ELDK 4.2/kilauea/3.5+ kernel broken

Hi Ben,

Remind me what is the symptom ? A specific device isn't working ? Or the
whole kernel goes toast ?

The whole kernel goes toast! Just reboots without saying much before;)

My feeling is that those patches make MSIs
work (well that's what they are supposed to do) and for some reason that
doesn't agree with whatever you have connected to the PCIe slot...

I have nothing connected to the PCIe slot. Just a standard kilauea eval
board with a defconfig and a 3.6 kernel, so if someone has a kilauea
board it should be very easy to reproduce.

Mai, Rupjyoti do you have a kilauea bard lying around to test?

Maybe it's the kilauea fdt?

If I hard code NR_MSI_IRQS (as it used to be) at least the kernel boots
and I can work with the board. (I don't think MSI interrupts work).

23c23
< #define DEBUG
---

47d46
< #define NR_MSI_IRQS	4
55c54
< 	int msi_virqs[NR_MSI_IRQS];
---

	int *msi_virqs;

67c66
< 	err = msi_bitmap_alloc(&msi_data->bitmap, NR_MSI_IRQS,
---

	err = msi_bitmap_alloc(&msi_data->bitmap, msi_irqs,

88a88,92

	msi_data->msi_virqs = kmalloc((msi_irqs) * sizeof(int),
					    GFP_KERNEL);
	if (!msi_data->msi_virqs)
		return -ENOMEM;

192a197,198

	dma_free_coherent(&dev->dev, 64, msi_virt, msi_phys);

202c208
< 	for (i = 0; i < NR_MSI_IRQS; i++) {
---

	for (i = 0; i < msi_irqs; i++) {

223,224d228
< 	/*msi = &ppc4xx_msi;*//*keep the msi data for further use*/
<

Regards,

Robert

Cheers,
Ben.

...If it's there, and you can see it, it's real. - If it's not there,
and you can see it, it's virtual.- If it's there, and you can't see it,
it's transparent.- If it's not there, and you can't see it, you erased
it. (from some mailing list)

My public pgp key is available,at:
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x90320BF1

On Wed, 2012-10-24 at 08:45 +0300, Robert Berger wrote:

Hi Ben,

quoted

Remind me what is the symptom ? A specific device isn't working ? Or the
whole kernel goes toast ?

The whole kernel goes toast! Just reboots without saying much before;)

quoted

My feeling is that those patches make MSIs
work (well that's what they are supposed to do) and for some reason that
doesn't agree with whatever you have connected to the PCIe slot...

I have nothing connected to the PCIe slot. Just a standard kilauea eval
board with a defconfig and a 3.6 kernel, so if someone has a kilauea
board it should be very easy to reproduce.

Mai, Rupjyoti do you have a kilauea bard lying around to test?

Maybe it's the kilauea fdt?

If I hard code NR_MSI_IRQS (as it used to be) at least the kernel boots
and I can work with the board. (I don't think MSI interrupts work).

Mai ? Somebody else from APM ? Can you look at this ?

Ben.